This top quality waterproofing agent from Nikwax comes in a liquid format making it easy to sponge-on to maintain support, breathability and water repellency. This waterproofing wax is designed to prolong the life and performance of all smooth, leather footwear. Available in Brown, Black or Neutral. Size Guide Available in one size: 125ml Liquid. The Nikwax Waterproofing Wax For Leather 125ml Brown is designed to keep your outdoor gear performing at its best for years.